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Manganese nodules from the Tasman Sea off Sydney
Two manganese nodules were recently recovered by HMAS Kimbla from a water depth of 4300 m, in a northeast-trending trough about 250 nautical miles southeast of Sydney (155°... -
Early Australian gravity observations
Since the publication of Gravimetry in Australia 1819-1976 (Dooley and Barlow, 1976), our attention has been drawn to the paper by Day (1966) on early Australian geophysical... -
Nannofossil and planktic foraminiferal biostratigraphy around the...
Nannofossil evidence suggests that the up-sequence appearance of Globigerinoides quadrilobatus primordius is depth-related, and first occurs at a lower stratigraphic level in... -
Climatic corrections to Australian heat-flow data
Surface heating subsequent to Pleistocene glaciation in Australia has resulted in a decrease in near-surface thermal gradients. Heat flow in shallow holes therefore appears to... -
The gravity field of the Australian basement
The Australian gravity field is analysed to determine whether the basement differs between regions of exposed basement and of covered basement (sedimentary basins). When the... -
Computer manipulation of a Digital Terrain Model (DTM) of Australia
Images of the topography of Australia (DTM) have been created from a digital data file of about 320 000 topographic spot heights measured during the gravity survey of Australia,... -
Regional variations in Australian heat flow
Twenty new heat-flow values from widely separated sites on the Australian continent are presented. These are combined with published land and marine data in the area 90-170°E,... -
Determination of GDA94 coordinates for eight stations of Ultimate...
An application dated 30 May 2013 for verification of a reference standard of measurement under Regulation 12 of the National Measurement Regulations 1999 was received from... -
Implications of Australian seismic and gravity measurements for the...
In a previous paper densities of crustal layers were inferred from seismic refraction surveys in Australia and surrounding marine areas. These indicated substantial variations... -
On the isostatic compensation of Australia topography
The depth of isostatic compensation and the strength of the lithosphere are investigated by calculating isostatic anomalies for a range of isostatic models. The models are of... -
Compilation and production of the 1976 1:5 000 000 Gravity Map of Australia
In 1976 a coloured 1:5 000 000 Gravity Map of Australia was published by BMR. At that stage the systematic reconnaissance gravity coverage of Australia, initiated by BMR in... -
Deep-water Quaternary Foraminifera from short cores taken between Australia...
Twenty short cores were recovered from the northern Scott Plateau (water depths ca 3200 m) and the southern slope of the Java Trench (water depths 4950-5790 m) by R.V. Valdivia... -
Quaternary vadose calcretes revisited
Vadose calcretisation commences with precipitation of micritic calcite from carbonate-rich meteoric water in the soil moisture zone. Through time, calcrete is subjected to... -
Earthquake Risk in Australia
Earthquake risk maps of Australia were prepared using a computer program which selected events from a regional earthquake file and calculated maximum values of acceleration,... -
Variation of crustal mass over the Australian region
Seismic refraction surveys in Australia and nearby marine areas provide data on crustal velocities and layer thicknesses. The averages of these at various places have been used... -
The Proterozoic impact record of Australia
Six impact structures of known or probable Proterozoic age have been identified in Australia: (1) the Teague Ring structure in central Western Australia, 30 km in diameter and... -
Gravimetry in Australia, 1819-1976
The earliest known gravity measurements in Australia were made by French expeditions in 1819 and 1824, using pendulums at Sydney. Later in the 19th century, further pendulum... -
Gravity provinces and their nomenclature
Gravity features have been defined and named by the various authors who have interpreted the results of land and marine reconnaissance gravity surveys in Australia. In general,... -
Free-air anomaly and gravity maps of Australia - in colour, 1:25,000,000
On the following pages are a Free-air Anomaly Map of Australia and a Gravity Map of Australia (showing Bouguer anomalies on land and free-air anomalies at sea), both at a scale... -
Clavohamulus primitus - A key North American conodont found in the Georgina Basin
The enigmatic conodont Clavohamulus primitus Miller is described from the Tremadocian part of the Ninmaroo Formation, Georgina Basin. This key subzone species for North American...